mpxplugins/serviceplugins/screensaverplugins/mpxscreensaverplugin/inc/mpxscreensaverplugin.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:45:05 +0200
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  MPX Screen Saver Plugin implementation
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*
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*/
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#ifndef C_CMPXSCREENSAVERPLUGIN_H
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#define C_CMPXSCREENSAVERPLUGIN_H
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// INCLUDES
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#include <ScreensaverpluginIntDef.h>
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#include <screensaverplugin.h>
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#include <mpxplaybackobserver.h>
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// CLASS DECLARATION
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class CEikonEnv;
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class MMPXPlaybackUtility;
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class MAknsSkinInstance;
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class TAknsItemID;
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class CMPXScreenSaverPluginContainer;
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class MProfileEngine;
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class MProfile;
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/**
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*  Screen saver plugin for music player now playing view
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*  @lib mpxscreensaverplugin.lib
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*  @since 3.0
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*/
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class CMPXScreenSaverPlugin: public CScreensaverPluginInterfaceDefinition,
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                             public MMPXPlaybackObserver,
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                             public MMPXPlaybackCallback
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{    
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public: 
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    /**
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    * Two-phased constructor.
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    * @since 3.1
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    */
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    static CMPXScreenSaverPlugin* NewL();
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    /**
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    * Destructor.
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    */
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    virtual ~CMPXScreenSaverPlugin();     
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public: // Functions From CScreensaverPluginInterfaceDefinition        
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    /**
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    * From MScreensaverPlugin, Method called by ScreenSaver Application
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    * when an animation file is configured as a Screen Saver.
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    * @param aHost  Screen saver plugin host.
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    * @since 3.1
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    */
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    virtual TInt InitializeL( MScreensaverPluginHost *aHost );
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    /**
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    * From MScreensaverPlugin, Method called by ScreenSaver Application
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    * when Screen Saver is activated.
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    * @since 3.1
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    */
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    virtual TInt Draw( CWindowGc& aGc );
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    /**
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    * From MScreensaverPlugin, Method called by ScreenSaver Application
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    * before the InitializeL.
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    * @since 3.1
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    */
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    virtual const TDesC16& Name() const;
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    /**
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    * From MScreensaverPlugin, Method called by ScreenSaver Application
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    * to get the capabilities of Screensaver plugin.
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    * @since 3.1
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    */
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    virtual TInt Capabilities();
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    /**
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    * From MScreensaverPlugin, Method called by Psln Application
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    * when the user selects Animated ScreenSaver 
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    * @since 3.1
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    */
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    virtual TInt PluginFunction(
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            TScPluginCaps /*aFunction*/,
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            TAny* /*aParam*/ );
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    /**
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    * From MScreensaverPlugin, Method called by ScreenSaver Application
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    * when there are Screen Saver events.
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    * @since 3.1
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    */
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    virtual TInt HandleScreensaverEventL(
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            TScreensaverEvent aEvent,
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            TAny* aData );       
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private:
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    /**
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    * Default Constructor
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    * @since 3.1
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    */  
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    CMPXScreenSaverPlugin();
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    /**
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    * 2nd phase constructor
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    * @since 3.1
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    */
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    void ConstructL();
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// from base class MMPXPlaybackObserver
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    /**
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     * From MMPXPlaybackObserver
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     * Handle playback message
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     * 
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     * @param aMessage playback message
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     * @param aErr system error code.
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     */
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    void HandlePlaybackMessage( CMPXMessage* aMessage, TInt aError );
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// from base class MMPXPlaybackCallback
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    /**
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     * From MMPXPlaybackCallback
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     * Handle playback property
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     *
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     * @param aProperty the property
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     * @param aValue the value of the property
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     * @param aError error code
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     */
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    void HandlePropertyL(
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        TMPXPlaybackProperty aProperty,
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        TInt aValue, 
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        TInt aError );
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    /**
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     * From MMPXPlaybackCallback
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     * Method is called continously until aComplete=ETrue, signifying that 
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     * it is done and there will be no more callbacks
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     * Only new items are passed each time
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     *
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     * @param aPlayer UID of the subplayer
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     * @param aSubPlayers a list of sub players
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     * @param aComplete ETrue no more sub players. EFalse more subplayer
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     *                  expected
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     * @param aError error code
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     */
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    void HandleSubPlayerNamesL(
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        TUid aPlayer, 
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        const MDesCArray* aSubPlayers,
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        TBool aComplete,
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        TInt aError );
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    /**
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     * From MMPXPlaybackCallback
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     * Handle extended media properties
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     *
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     * @param aMedia media 
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     * @param aError error code    
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     */
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    void HandleMediaL(
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        const CMPXMedia& aMedia,
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        TInt aError );     
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    /**
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     *  Handle playback message
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     *
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     *  @param aMessage playback message
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     */
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    void DoHandlePlaybackMessageL( 
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        const CMPXMessage& aMessage );
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    /**
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     *  Handle media properties.
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     *  
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     *  @param aProperties media properties
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     *  @param aError error code    
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     */
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    void DoHandleMediaL(
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        const CMPXMedia& aMedia,
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        TInt aError );
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    /**
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     *  Handle playback state changed.
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     *
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     *  @param aState New Playback state
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     */
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    void DoHandleStateChangedL(
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        TMPXPlaybackState aState );       
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    /**
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     *  Creates the container
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     */
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    void CreateContainerL();    
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private:
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    // Pointer to the screen saver host
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    MScreensaverPluginHost*     iScreenSaverHost;        
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    CEikonEnv*                  iEikEnv;  
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    MMPXPlaybackUtility*        iPlaybackUtility;  // not own
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    CMPXScreenSaverPluginContainer*     iContainer;  
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    MProfileEngine*             iProfileEngine; // not own
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    TMPXPlaybackState           iPlaybackState;
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    TInt                        iResourceOffset;          
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    TBool                       iTimerChanged;           
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    HBufC*                      iDisplayName;
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};  
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#endif // C_CMPXSCREENSAVERPLUGIN_H
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